Fast Mold Testing - San Francisco Bay Area logo

Fast Mold Testing - San Francisco Bay Area

Home inspector · San Francisco, CA · reviewed since 2025

How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%98+57.5Reliability 26%98+25.6Value 15%87+13.2Experts Score= 96Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.96SCORE
AGradeLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#20 of 84 hazardous material removalPosition by Experts Score among all companies we track in this category. · better than 77%
5.0 ★★★★★ 83 Google reviews · 24 photos
99%five-star reviews
4.98★last 12 monthsAverage stars on reviews from the last 12 months only.
0%1–2★ in 2 yearsShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
100%reviews answered by the owner
Oct 2026latest review

Fast Mold Testing - San Francisco Bay Area at a glance

Customers consistently highlight the rapid scheduling of inspections, often occurring within 24 hours, and the quick turnaround for detailed lab reports. Reviewers describe the staff as professional, knowledgeable, and communicative, noting that inspectors clearly explain findings and provide recommendations for remediation. While most feedback is positive, one customer mentioned that the pricing felt somewhat high despite the efficient service and thorough nature of the testing process.

  • Google rating: 5.0 out of 5 from 83 reviews (99% five-star).
  • Reviews on this page: 83 Google reviews (79 with written comments, 1 with photos).
  • Owner responses: the business replied to 100% of reviews.
  • Most recent review: October 10, 2026.
  • Service: Air Quality Tester serving San Francisco, California.

Data from Google, last updated October 26, 2026.

Score profile vs other hazardous material removal

Score per factor (100 = best)Each factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: momentum and satisfaction; weakest: value.

Satisfaction98Reliability98Craft & service–Value87Momentum100Replies to reviews–Satisfaction: 98 (median 94)Reliability: 98 (median 92)Value: 87 (median 100)Momentum: 100 (median 100)
This companyHazardous Material Removal median0 = centre, 100 = best
SatisfactionSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Fast Mold Testing - San Francisco Bay Area: 98/100 on this factor. Category median: 94.A
98
ReliabilityReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Fast Mold Testing - San Francisco Bay Area: 98/100 on this factor. Category median: 92.A
98
Craft & serviceCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Not enough reviews for this factor yet. Category median: 96.–
–
ValueValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Fast Mold Testing - San Francisco Bay Area: 87/100 on this factor. Category median: 100.A
87
MomentumMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Fast Mold Testing - San Francisco Bay Area: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.Not enough reviews for this factor yet. Category median: 71.–
–

Bar = this company · dark tick = category median.

Star ratings

83 Google reviews we collected

  • 5 stars8299%
  • 4 stars11%
  • 3 stars00%
  • 2 stars00%
  • 1 star00%

Praise vs complaints

Phrases our text analysis found in 79 written reviews

  • Praise242100%
  • Complaints10%

PriceGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.

Price verdicts customers left with their Google review

  • Great price1124%
  • Reasonable3372%
  • Overpriced12%
  • Not sure12%

Topic share

How often each topic comes up in the written reviews

  • Speed & response6728%
  • Staff & attitude5623%
  • Would recommend4016%
  • Quality & results3012%
  • Communication2711%
  • Honesty & trust125%
  • Price & value115%

What customers talk about

We read 79 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.

  • “Replied promptly and had an inspector out the next day.”
  • “The admin and inspectors are friendly and easy tow work with.”
  • “definitely would recommend them to family and friends.”
  • “The technician was very thorough and took time to inspect every aspect of my bathrooms.”
  • “Afterwards, the technician took time to carefully explain the next steps given that there was extensive mild contamination.”
  • “I would recommend them if you’re looking for a trustworthy and experienced inspector and coordinator that will treat you with respect.”
  • “Very easy to schedule and the price was reasonable.”

People customers mention

  • Josh 5 reviews
  • Alicia 4 reviews

praise complaint · found by our text analysis, Google review wording unchanged.

Reviews for your job

Customers hired Fast Mold Testing - San Francisco Bay Area for 5 kinds of job. Pick one to see what they paid and said.

Recent reviews

Tyler8 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 weeks ago★★★★★

Fast response and fast turnaround for the report. The admin and inspectors are friendly and easy tow work with.

Rob1 reviewTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a month ago★★★★★

Replied promptly and had an inspector out the next day. The report came back quickly after that and they helped me find contractors to remediate the issue.

Mold inspectionMold samplingMold remediation
Panda5 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a month ago★★★★★

Very professional and very knowledgeable. They helped us figure out it’s a ventilation issue and what would need to be done to solve the mold issue’s in the future.definitely would recommend them to family and friends.

Reasonable priceMold inspectionRental property inspections
Greg4 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a month ago★★★★★

Professional, very prompt, and thorough. We had a test scheduled the same day we called them, and a report with non 48 hours of the test.

Reasonable priceMold inspection
Eric1 reviewTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a month ago★★★★★

Fast Mold Testing was great and professional! They got back to my initial inspection request within 30 minutes and scheduled an appointment for the next day. The inspection itself went smoothly, with the employees being professionals.

Reasonable priceMold inspectionIndoor allergen samplingMold sampling
Justin1 reviewTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 months ago★★★★★

This company is amazing! I was able to quickly schedule my appointment and a technician arrived in the next two days. The technician was very thorough and took time to inspect every aspect of my bathrooms. Afterwards, the technician took time to carefully explain the next steps given that there was extensive mild…

Great priceMold inspection

Photos

Customer reviews

5.0 ★★★★★ 83 reviews on Google · rating breakdown

Reviews from Google, shown as published (original wording, unedited).

Jobs customers hired them for — from Google's service tags and the review text
Team members customers mention
Filter by topic — each topic is highlighted in the reviews in the same color
Tyler Stewart8 reviewsTotal number of Google reviews Tyler has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Fast response and fast turnaround for the report. The admin and inspectors are friendly and easy tow work with.

Response from the owner · a week ago

Thank you, Tyler, for your great feedback! We’re glad you appreciated our fast response, quick report turnaround, and friendly admin and inspection team. We proudly serve the San Francisco Bay Area, including San Francisco, Daly City, Oakland, Berkeley, San Mateo, and South San Francisco. We appreciate your trust and look forward to assisting you again!

Wen Hung Leung7 reviewsTotal number of Google reviews Wen has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Fast response. Very professional. Would highly recommend.

  • Price assessment: Reasonable price
  • Services: Mold inspection, Indoor allergen sampling, Mold sampling
Response from the owner · 3 weeks ago

Thank you, fast and professional is what we aim for every time. Appreciate the recommendation. We're across San Francisco, Oakland, Berkeley, Daly City, South San Francisco, San Mateo, Redwood City and Pacifica whenever you need us.

Rob Spies1 reviewTotal number of Google reviews Rob has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Replied promptly and had an inspector out the next day. The report came back quickly after that and they helped me find contractors to remediate the issue.

  • Services: Mold inspection, Mold sampling, Mold remediation
Response from the owner · 3 weeks ago

Rob, appreciate you noting the whole sequence rather than just the outcome. Prompt reply, next-day inspector, fast report, each step only counts if the one after it holds up. On the contractor names: since we don't remediate, those are recommendations rather than referrals in the commercial sense. Take them or get your own quotes, whichever you prefer. We're across San Francisco, Oakland, Berkeley, Daly City, South San Francisco, San Mateo, Redwood City and Pacifica, and happy to verify the work once it's done.

Panda5 reviewsTotal number of Google reviews Panda has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Very professional and very knowledgeable. They helped us figure out it’s a ventilation issue and what would need to be done to solve the mold issue’s in the future.definitely would recommend them to family and friends.

  • Price assessment: Reasonable price
  • Services: Mold inspection, Rental property inspections
Response from the owner · a month ago

Thank you, and identifying ventilation as the underlying cause is the part that actually matters here. Treating visible mold without fixing what's producing the moisture just resets the clock. You'd get the same result back in a year, wonder why, and pay for it twice. Knowing it's ventilation means the fix is permanent rather than cosmetic. Appreciate the recommendation to family and friends. We're across San Francisco, Oakland, Berkeley, Daly City, South San Francisco, San Mateo, Redwood City and Pacifica.

Greg Murphy4 reviewsTotal number of Google reviews Greg has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Professional, very prompt, and thorough. We had a test scheduled the same day we called them, and a report with non 48 hours of the test.

  • Price assessment: Reasonable price
  • Services: Mold inspection
Response from the owner · a month ago

Same-day test, report inside 48 hours, that's about as tight as the lab timeline allows. Glad it ran that way for you, Greg. We're across San Francisco, Oakland, Berkeley, Daly City, South San Francisco, San Mateo, Redwood City and Pacifica whenever you need us.

dana wolffLocal Guide · 22 reviewsTotal number of Google reviews dana has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Thank you, fast response, fast report details.

  • Price assessment: Reasonable price
  • Services: Mold inspection
Response from the owner · a month ago

Thanks Dana. Fast on both ends is what we aim for, quick to get there, quick to get you the detail. We're across San Francisco, Oakland, Berkeley, Daly City, South San Francisco, San Mateo, Redwood City, and Pacifica whenever you need us.

Eric Zhang1 reviewTotal number of Google reviews Eric has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Fast Mold Testing was great and professional! They got back to my initial inspection request within 30 minutes and scheduled an appointment for the next day. The inspection itself went smoothly, with the employees being professionals.

  • Price assessment: Reasonable price
  • Services: Mold inspection, Indoor allergen sampling, Mold sampling
Response from the owner · a month ago

Eric, thirty minutes to respond and an appointment the next day, that's the pace we try to hold. Thanks for noting it. Glad the inspection itself went smoothly too. We're here across San Francisco, Oakland, Berkeley, Daly City, South San Francisco, San Mateo, Redwood City, and Pacifica whenever you need us.

Justin Munson1 reviewTotal number of Google reviews Justin has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

This company is amazing! I was able to quickly schedule my appointment and a technician arrived in the next two days. The technician was very thorough and took time to inspect every aspect of my bathrooms. Afterwards, the technician took time to carefully explain the next steps given that there was extensive mild contamination. The lab results came back quickly and the concierge called me and took the took to explain the results. Fast Mold Testing was with me every step of the way and I’m glad that they were able to guide me through this difficult and complex process. If you suspect that there is mold in your home, I strongly recommend that you give this company a call!

  • Price assessment: Great price
  • Services: Mold inspection
Response from the owner · a month ago

Justin, thank you for writing this out properly, and sorry you're dealing with the extent of what was found. Being walked through the next steps at the point of inspection matters most in exactly your situation. When results come back significant, the gap between "here's your report" and "here's what you actually do now" is where people get stuck, and it's the part we try hardest not to leave open. Glad the concierge follow-up call landed too. A lab report is only useful if someone talks you through what the numbers mean for your home specifically. Hope the remediation goes smoothly from here. We're here across San Francisco, Oakland, Berkeley, Daly City, South San Francisco, San Mateo, Redwood City, and Pacifica if you need anything further, including post-remediation verification once the work is done.

Clark GroveLocal Guide · 8 reviewsTotal number of Google reviews Clark has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Fast mold testing was just that. I called in on a Tuesday and they were out on Wednesday. Quick courteous and helpful. Testing was done quickly and a full report was made.

Response from the owner · 2 months ago

Clark, "Fast Mold Testing was just that", we'll take it. Called Tuesday, out Wednesday, report done. That's the whole promise in one line. Thanks for the kind words. We're here across San Francisco, Oakland, Berkeley, Daly City, South San Francisco, San Mateo, Redwood City, and Pacifica.

Eric ChowLocal Guide · 22 reviewsTotal number of Google reviews Eric has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Fast Mold Testing was very quick and efficient, with helpful support and very responsive communications. I'd recommend if need objective, clear information about the mold and moisture in your home.

Response from the owner · 2 months ago

Objective, clear information", that's exactly the job, Eric. We don't do remediation, so there's no reason for the report to say anything other than what the lab found. Glad the communication side matched. Thanks for the recommendation. We cover San Francisco, Oakland, Berkeley, Daly City, South San Francisco, San Mateo, Redwood City, and Pacifica.

Fast Mold Testing - San Francisco Bay Area on Google Maps →

Business details